A224167 Number of n X n 0..3 arrays with rows, diagonals and antidiagonals unimodal and columns nondecreasing.

4, 100, 4739, 272130, 16625026, 1038484760, 65713691148, 4209750150062, 273303096405547

Offset: 1

Author

R. H. Hardin, Mar 31 2013

Keywords

• nonn
• more

Examples

			Some solutions for n=3:
..0..1..0....0..0..0....0..3..2....2..0..0....0..0..1....0..0..2....0..0..1
..2..1..1....0..2..0....0..3..2....2..0..0....0..2..2....0..1..3....1..2..3
..3..3..2....2..2..0....1..3..2....2..3..0....1..2..3....0..3..3....2..3..3
		

Crossrefs

Diagonal of A224173.

Extensions

Name corrected by Andrew Howroyd, Mar 18 2025